[REVIEW 3-6-0 1/3] fdo#51659 "File - Wizards - Letter" crash

[Stephan Bergmann]

<https://bugs.freedesktop.org/show_bug.cgi?id=51659> "File >> Wizards >> 
Letter Yields No UI" had apparently independently been fixed on master 
already with Caolan's 
<http://cgit.freedesktop.org/libreoffice/core/commit/?id=18b15e48cb1fa7590620930975796a0c0dcac225> 
"this is the stupidest hard-coded number in the world," but it also 
requires backporting to libreoffice-3-6 and libreoffice-3-6-0.

I backported it to libreoffice-3-6 with my sign-off now as 
<http://cgit.freedesktop.org/libreoffice/core/commit/?h=libreoffice-3-6&id=67db4e1ec90161bc31c00bc67190bc2895c7fa59>. 
  Two more reviews for this trivial fix are needed for libreoffice-3-6-0.

Thanks,
Stephan